Finding the Fourth Proportional to 13,336.17, 19,998.72 and 5,011.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,336.17 : 19,998.72 = 5,011.89 : x
2. Step 2: Convert to fraction form
   13,336.17/19,998.72 = 5,011.89/x
3. Step 3: Cross multiply
   13,336.17x = 19,998.72 × 5,011.89
4. Step 4: Simplify right side
   13,336.17x = 100,231,384.78
5. Step 5: Solve for x
   x = 100,231,384.78/13,336.17
6. Step 6: Final answer
   x = 7,515.75